Just pick ANY name and get writing. If a name turns up later that you prefer, that's exactly what the 'Search and replace' function on your computer is for. As @Jepchamp says, it doesn't matter what you call him.
Your readers will find out what he's like not from his name, but from how YOU write about him, and show us the way he thinks, reacts and behaves. Call him Bozo or call him Fitzgerald Lloyd Finchette, by the time we've read the first page we shouldn't be noticing his name any more, but should be engrossed in what he's DOING.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.